portmap: moved to github

git-svn-id: svn://svn.openwrt.org/openwrt/packages@41426 3c298f89-4303-0410-b956-a3cf2f4a3e73
libffi: moved to github

git-svn-id: svn://svn.openwrt.org/openwrt/packages@41427 3c298f89-4303-0410-b956-a3cf2f4a3e73
glib: moved to github

git-svn-id: svn://svn.openwrt.org/openwrt/packages@41428 3c298f89-4303-0410-b956-a3cf2f4a3e73